What actually happens when someone buys rustic land believing it's buildable?

The pattern is depressingly consistent: a below-market price, a seller saying 'project possible', a purchase, and then a building application that dies against the PDM. The money is stranded in land worth a fraction of what was paid, and reclassification statistically never comes. The entire prevention costs a few hundred euros: one classification check at the câmara before the promise contract. We wrote up the full anatomy of this one.